/***********************************************
* Required field(s) validation v1.10- By NavSurf
* Visit Nav Surf at http://navsurf.com
* Visit http://www.dynamicdrive.com/ for full source code
***********************************************/

function formCheck(formobj){
	//1) Enter name of mandatory fields
	var fieldRequired = Array("NAME","COMPANY","TELEPHONE","mail_from","COMMENTS");
	//2) Enter field description to appear in the dialog box
	var fieldDescription = Array("Name","Company Name","Telephone Number","Email Address","Comments");
	//3) Enter dialog message
	var alertMsg = "Please complete the following fields:\n";
	
	var l_Msg = alertMsg.length;
	
	for (var i = 0; i < fieldRequired.length; i++){
		var obj = formobj.elements[fieldRequired[i]];
		if (obj){
			switch(obj.type){
			case "select-one":
				if (obj.selectedIndex == -1 || obj.options[obj.selectedIndex].text == ""){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			case "select-multiple":
				if (obj.selectedIndex == -1){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			case "text":
			case "textarea":
				if (obj.value == "" || obj.value == null){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			default:
				if (obj.value == "" || obj.value == null){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
			}
		}
	}

	if (alertMsg.length == l_Msg){
		return true;
	}else{
		alert(alertMsg);
		return false;
	}
}

/*formfields*/

window.onload = function()
{
	if(document.getElementById)
	{
		var linkContainer = document.getElementById('linkContainer');
		var toggle = linkContainer.appendChild(document.createElement('a'));
		toggle.href = '#';
		toggle.appendChild(document.createTextNode('Display required fields only'));
		toggle.onclick = function()
		{
			var linkText = this.firstChild.nodeValue;
			this.firstChild.nodeValue = (linkText == 'Display required fields only') ? 'Display all fields' : 'View required fields only';
			
			var tmp = document.getElementsByTagName('div');
			for (var i=0;i<tmp.length;i++)
			{
				if(tmp[i].className == 'optional')
				{
					tmp[i].style.display = (tmp[i].style.display == 'none') ? 'block' : 'none';
				}
			}
			return false;
		}
	}
}